When are property taxes due in Mineral County, Montana?

Mineral County property taxes are due November 30. A second installment is due May 31.

What is the penalty for late property tax payment in Mineral County, Montana?

The late payment penalty in Mineral County is 2% penalty + 10% interest.

How do I pay Mineral County, Montana property taxes?

You can pay Mineral County property taxes online through the county payment portal or by mail to the county treasurer.

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Mineral County Property Tax Due Date

Name: Treasurer
Address: 300 River Street, Superior, MT, 59872, US
Telephone: 406-822-3530

Montana

406-822-3530

2026 Property Tax Due Dates

County-specific

Official Source

Installment 1in 93 days

November 30

First installment due

Installment 2overdue

May 31

Second installment due (following year)

Pay Taxes Online →

Penalty: 2% penalty + 10% interest

Mineral County Treasurer

Treasurer

Merry Mueller

Phone

406-822-3530

mmueller@co.mineral.mt.us

Fax

406-822-3579

Office Address

300 River Street
Superior, MT 59872

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Mailing Address

PO Box 100
Superior, MT 59872

Office Hours

Monday-Friday 8am-5pm

Motor Vehicle 8am-4:30pm

closed holidays

How to Pay

Online

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Pay Online →

By Mail

Mail check payable to Mineral County Treasurer — PO Box 100, Superior MT 59872

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In Person

Visit the Treasurer's office — 300 River Street, Superior MT 59872, Monday-Friday 8am-5pm

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About Property Taxes in Montana

Montana property taxes are administered at the county level. The state Department of Revenue appraises property at market value and applies a class rate to determine the taxable value. Residential property is appraised at market value, and the taxable value equals a percentage of that (the residential class rate is set by the state legislature and has been reduced in recent years to around 1.35% of market value — meaning a $300,000 home has a taxable value of approximately $4,050). Montana has no sales tax, so property taxes are an important revenue source for local governments and schools. Tax bills are mailed in the fall and split into two payments.

Payment & Assessment

Montana property taxes are paid in two equal installments: First half: Due November 30 Second half: Due May 31 of the following year A 2% penalty per month (up to 10%) applies to late payments. Most counties offer online payment through the county treasurer's website. Contact your county treasurer for available payment options.

Statewide framework for Montana. Your county's specific rates and deadlines are shown above.